Installation.安。AMP 420A.與N。Mount the AMP 420A and pass the conductor through.安放大器420A和導體。the window. Either direction is okay..窗口。任何一個方向是好的。Connect DC loop power..接直流回電源。12 Volt minimum 28 Volt maximum.12伏28伏的最大最小。Maximum connected impedance is 750 Ohms..最大接的抗是750歐姆的。Select a full scale value. Unit is not damaged by an.擇一個滿刻度值。單位是不會損壞的。overload such as a starting inrush. Dont change full.如啟動浪涌。充滿變化。scale switches while current is flowing.模的開關電流。